300M Special V6-3.5L VIN G (2002)
Compass: Service and Repair
Compass Calibration
STANDARD PROCEDURE - COMPASS CALIBRATION
CAUTION: Do not place any external magnets, such as magnetic roof mount antennas, in the vicinity of the compass. Do not use magnetic tools
when servicing the overhead console.
The electronic compass unit features a self-calibrating design, which simplifies the calibration procedure.
This feature automatically updates the compass calibration while the vehicle is being driven. This allows the compass unit to compensate for small
changes in the residual magnetism that the vehicle may acquire during normal use. If the compass readings appear to be erratic or out of calibration,
perform the following calibration procedure. Also, new service replacement Electronic Vehicle Information Center (EVIC) modules must have their
compass calibrated using this procedure. Do not attempt to calibrate the compass near large metal objects such as other vehicles, large buildings, or
bridges; or, near overhead or underground power lines.
NOTE: Whenever an EVIC module is replaced, the variance number must also be reset. Refer to Compass Variation Adjustment in this group.
Calibrate the compass manually as follows:
1. Turn the ignition switch to the ON position. If the compass/temperature data is not currently being displayed, momentarily depress and release the
C/T push button to reach the compass/temperature display
2. Depress the Reset push button and hold the button down until "CAL" appears in the display. This takes about ten seconds, and appears about five
seconds after "VARIANCE = XX" is displayed.
3. Release the Reset push button.
4. Drive the vehicle on a level surface, away from large metal objects and power lines, through one complete circle at between five and eight
kilometers-per-hour (three and five miles-per-hour) in not less than 20 seconds. The "CAL" message will disappear from the display to
indicate that the compass is now calibrated.
NOTE:
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If the "CAL" message remains in the display, either there is excessive magnetism near the compass, or the unit is faulty. Repeat the calibration
procedure one more time.
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If the wrong direction is still indicated in the compass display, the area selected for calibration may be too close to a strong magnetic field. Repeat
the calibration procedure in another location.
